Re: Wireguard and my Buster kernel

[Dan Ritter <dsr@randomstring.org>]

Bob Bernstein wrote: 
> /var/log/kern.log contains these lines:
> 
> Jul 19 09:15:38 debian kernel: [69157.444725] wireguard: module verification
> failed: signature and/or required key missing - tainting kernel
> Jul 19 09:15:38 debian kernel: [69157.449554] wireguard: WireGuard
> 1.0.20200712 loaded. See www.wireguard.com for information.
> Jul 19 09:15:38 debian kernel: [69157.449555] wireguard: Copyright (C)
> 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
> 
> This is an old HP amd64 running as noted:
> 
> $ uname -a
> Linux debian.localdomain 4.19.0-14-amd64 #1 SMP Debian 4.19.171-2
> (2021-01-30) x86_64 GNU/Linux
> 
> Principal symptom: pervasive slowdown of all connections to remote hosts,
> notice first with my smtp smart host.
> 
> I am resigned to reinstalling my VPN, which will bring the latest Wireguard
> with it iirc, but are those kern.log lines consistent with my
> complaint/report of slowness?

Probably not. We have Wireguard installed on a hundred or so
machines, including roving laptops, and there are no issues like
that. 

Note that Wireguard will be part of the default kernel when
Bullseye becomes stable in a month or so, or if you get a
backports kernel now.

-dsr-